I too , just ordered 17 inch winter tires and wheels from the Tirerack.....actually I ordered 9 of them. 4 for me, 4 for a friend and a spare for us to share (just in case!) Total with everything in was only $4,000 CDN.
'08 E92 SG M3: AA G2L3 snail, Catless X-Pipe & Sig Series Rear. AP rods. TC Kline EDC Coil Overs. MRF Alum Sub Frame Bushings. TMS Delrin Diff'l Bushings. BFI Motor Mounts. Recaro PP's. BMW Elec Perf Steering Wheel. P3 Vent Gauge. PS Overflow Kit. LUX V3. APEX ARC-8 18"x9.5"/10.5". Conti Slicks 275/35F 305/30R. Stoptech Pads/SS Lines. Castrol SRF. Cantrell Motorsports Brake Duct Kit.